package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired
    private WebSocketServer webSocketServer;

    /**
     * 提交提单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //处理各种异常，购物车为空，地址簿为空
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if(addressBook==null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName()+addressBook.getDistrictName()+addressBook.getDetail());


        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(BaseContext.getCurrentId());
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList==null && shoppingCartList.size()==0){
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        //之前没有加入地址
        orders.setAddress(addressBook.getDetail());
        orders.setUserId(BaseContext.getCurrentId());
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        //收货人
        orders.setConsignee(addressBook.getConsignee());
        orderMapper.insert(orders);


        //向订单详情插入多条数据
        ArrayList<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //清空当前用户购物车数据
        shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
        //封装vo返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();

        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
//        // 当前登录用户id
//        Long userId = BaseContext.getCurrentId();
//        User user = userMapper.getById(userId);
//
//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );

        JSONObject jsonObject = new JSONObject();
        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);

        //通过websocket向客户端浏览器推送消息
        Map map = new HashMap();
        map.put("type",1);
        map.put("orderId",orders.getId());
        map.put("contetn","订单号："+outTradeNo);
        webSocketServer.sendToAllClient(JSONObject.toJSONString(map));


    }

    /**
     * 历史订单查询
     */
    public PageResult hisrotyOrderQuery(int pageNum, int pageSize, Integer status) {
        PageHelper.startPage(pageNum,pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        ArrayList<OrderVO> list = new ArrayList<>();
        //分页条件查询
        Page<Orders> page=orderMapper.PageQuery(ordersPageQueryDTO);
        if(page!=null && page.getTotal()>0){
            for (Orders orders : page) {
                Long ordersId = orders.getId();

                //查询订单明细
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrdersId(ordersId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),list);
    }

    /**
     * 订单详情
     * @param id
     * @return
     */
    public OrderVO details(Long id) {
        //id查询订单
        Orders orders = orderMapper.getById(id);
        //查询该订单对应的菜品
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrdersId(orders.getId());
        //将该订单及其详情分装到VO并返回
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    /**
     * 取消订单
     * @param id
     * @throws Exception
     */
    public void userCancel(Long id) throws Exception {
        Orders orders = orderMapper.getById(id);
        //校验订单是否存在
        if(orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if(orders.getStatus()>2)
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders ordersCancel = new Orders();
        ordersCancel.setId(orders.getId());
        //订单处于待接单状态下取消，需要进行退款
        if(orders.getStatus()==Orders.TO_BE_CONFIRMED){
//            weChatPayUtil.refund(
//                    orders.getNumber(),
//                    orders.getNumber(),
//                    new BigDecimal(String.valueOf(orders.getAmount())),
//                    new BigDecimal(String.valueOf(orders.getAmount())));
            log.info("退款已退还账户");
            ordersCancel.setPayStatus(Orders.REFUND);
        }

        //更新订单状态，取消原因，取消时间
        ordersCancel.setStatus(Orders.CANCELLED);
        ordersCancel.setCancelReason("用户取消");
        ordersCancel.setCancelTime(LocalDateTime.now());
        orderMapper.update(ordersCancel);
    }

    /**
     * 再来一单
     */
    public void OrdersAgain(Long id) {
        Long userId = BaseContext.getCurrentId();

        //根据id查询订单详情
        List<OrderDetail> orderDetailList= orderDetailMapper.getByOrdersId(id);

        //将订单详情对象封装为购物车对象
        List<ShoppingCart> shoppingCartList = new ArrayList<>();
        for (OrderDetail orderDetail : orderDetailList) {
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(orderDetail,shoppingCart);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCart.setUserId(userId);
            shoppingCartList.add(shoppingCart);
        }

        shoppingCartMapper.insertBatch(shoppingCartList);

    }


    /**
     * 管理端订单搜索
     */
    public PageResult search(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());

        Page<Orders> page= orderMapper.PageQuery(ordersPageQueryDTO);

        //部分订单状态，需要额外返回订单菜品信息，将orders转化为Ordervo
        List<OrderVO> orderVOList = getOrderVoList(page);

        return new PageResult(page.getTotal(),orderVOList);
    }

    /**
     * 需要返回菜品的信息，自定义ordervo相应结果
     * @param page
     * @return
     */
    private List<OrderVO> getOrderVoList(Page<Orders> page) {
        List<Orders> ordersList = page.getResult();
        List<OrderVO> orderVOList = new ArrayList<>();
        if(ordersList!=null){
            for (Orders orders : ordersList) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders,orderVO);
                String orderDishes =getOrderDishesStr(orders);

                //将订单菜品信息分装到orderVo中，并添加到orderList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }


        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        //查询订单菜品详情信息
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrdersId(orders.getId());

        //将每一条订单菜品信息拼接为字符串
        List<String> orderDishesList = new ArrayList<>();
        for (OrderDetail s : orderDetailList) {
            String orderDishes = s.getName() + "*" + s.getNumber();
            orderDishesList.add(orderDishes);
        }

        return String.join("",orderDishesList);
    }

    /**
     * 订单统计
     */
    public OrderStatisticsVO statistics() {
        //根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed =orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer toBeDelivery =orderMapper.countStatus(Orders.CONFIRMED);
        Integer onDelivery =orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        //将查询出的数据封装到orderStatisticsVO中
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(toBeDelivery);
        orderStatisticsVO.setDeliveryInProgress(onDelivery);

        return orderStatisticsVO;
    }

    /**
     * 接单
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders=Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }
    /*(
     * 拒单
     */

    public void reject(OrdersRejectionDTO ordersRejectionDTO) {
        //根据id查询订单
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        //订单只有存在且状态为2才可以拒单
        if(orders==null || !orders.getStatus().equals(Orders.TO_BE_CONFIRMED))
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        //支付状态
        Integer payStatus  = orders.getPayStatus();
        if(payStatus==Orders.PAID){
            String refund = String.valueOf(orders.getAmount());
            log.info("退款金额为：{}",refund);
        }

        Orders newOrders = new Orders();
        newOrders.setId(ordersRejectionDTO.getId());
        newOrders.setStatus(Orders.CANCELLED);
        newOrders.setCancelTime(LocalDateTime.now());
        newOrders.setRejectionReason(ordersRejectionDTO.getRejectionReason());

        orderMapper.update(newOrders);
    }

    /**
     * 管理端取消订单
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        //id获取订单
        Orders ordersDB= orderMapper.getById(ordersCancelDTO.getId());

        if(ordersDB==null)
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //看看顾客是否支付
        Integer payStatus = ordersDB.getPayStatus();
        if(payStatus == Orders.PAID)
        {
            String refund = String.valueOf(ordersDB.getAmount());
            log.info("退款金额为：{}",refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 派送
     * @param id
     */
    public void delivery(Long id) {
        Orders orderDB = orderMapper.getById(id);
        // 校验订单是否存在，并且状态为3
        if(orderDB ==null || !orderDB.getStatus().equals(Orders.CONFIRMED)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders newOrders = new Orders();
        // // 更新订单状态4,状态转为派送中
        newOrders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        newOrders.setId(orderDB.getId());

        orderMapper.update(newOrders);
    }
    /**
     * 完成订单
     *
     * @return
     */
    public void complete(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 500000){
            //配送距离超过500000米
            throw new OrderBusinessException("超出配送范围");
        }
    }

    /**
     * 客户催单
     */
    public void reminder(Long id) {
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB == null){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Map map = new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号:"+ordersDB.getNumber());

        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
